David Q Matus, Richard R Copley, Casey W Dunn, Andreas Hejnol, Heather Eccleston, Kenneth M Halanych, Mark Q Martindale, Maximilian J Telford

2006/8/8

Current Biology

16

15

R575-R576

Elsevier

Despite advances in phylogenetic methods, there are still a number of enigmatic phyla
whose affinities remain poorly resolved. One of the most recalcitrant of these is a group of
small predatory marine invertebrates, the chaetognaths (arrow worms). Resolution of the
phylogenetic position of the chaetognaths is key for reconstructing the evolutionary history of
some of the most fundamental features of animals, including those that have been used to
delineate two major clades of animals—the protostomes and deuterostomes. An affiliation ...